Question

The velocity of sound in air is 330 m/s and the velocity of light in air is 3 × 10⁸ m ⁄ s. What frequency in Hz, a BBC station transmits at 1500 m broadcast ? 

(a) 0.22 Hz 

(b) 5 × 10⁶ Hz 

(c) 2 × 10⁵ Hz 

(d) 59⁵ × 10³ Hz

Answer 1

Correct option (c) 2 × 10⁵ Hz

Explanation:

We know that broadcasting from a Broadcasting station is transmitted through electromagnetic waves which travel with the velocity of light, so,